Suppose You Have Gone to Great Lengths to Determine Which

Multiple Choice

Suppose you have gone to great lengths to determine which participants will perform the experiment at what time and in what group, but some participants just fail to show up for their appointments. What should you do?

A) nothing; conduct the experiment as planned, without their data
B) randomly select and assign new participants to take their place
C) estimate what their performance would have been based on how other members of their group performed and add it in to your results
D) to fill in the gaps in your groups, take the nearest willing volunteers